What does it mean when your car go in gear?

When you put your car in gear, it means that you are connecting the engine to the transmission. This allows the engine to transfer power to the wheels so that the car can move. There are usually several gears that you can select, and each gear has a different ratio that changes how much power the engine sends to the wheels. For example, first gear is typically used for starting off from a stop, and it provides a lot of power to get the car moving quickly. Higher gears are used for higher speeds, and they provide less power but allow the car to move more efficiently.